Illinois Flash Flood Warning - Severe | Effective 06/11/2026 15:02

Headline: 
Flash Flood Warning issued June 11 at 5:02PM CDT until June 11 at 11:15PM CDT by NWS Quad Cities IA IL
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
June 11, 2026 - 3:02pm
Expires: 
June 11, 2026 - 9:15pm
Description: 
FFWDVN The National Weather Service in Quad Cities has issued a * Flash Flood Warning for... Hancock County in west central Illinois... McDonough County in west central Illinois... * Until 1115 PM CDT Thursday. * At 502 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Macomb, Fort Madison, Keokuk, Carthage, Nauvoo, Bushnell, Hamilton, Warsaw, Colchester, La Harpe, Dallas City, Blandinsville, Augusta, Bowen, Industry, Good Hope, Prairie City, Bardolph, West Point and Ferris. This includes the following State Parks... Argyle Lake State Park and Nauvoo State Park.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
Hancock, IL; McDonough, IL
Forcast Office: 
NWS Quad Cities IA IL